Means for transmitting power



Dec. 16,-1941. l \`G E ERTEL 2,266,594 I MEANS FOR TRANSMITTING POWER Filed March 26, 1941 2 Sheets-Sheet l @,Etz'nzez -IN VEN TOR.

Dec. 16, 1941'.

G. E. ERTEL MEANS FOR TRANSMITTING PWER l Filed March 26, 1941 2 sheets-'sheet 2 Patented Dec. 16, 1941 U NITED `S'lAT-ES PATEN tGFFlCI MEANS'FOR TRANSMITTIlI'Gr'POWER l George'E VErtel, Monroeville, Ind.

Application March, 1941, Serial No.`38`5,363

(Cl. Md-2"?) '2 Claims.

This inven'ti'on f'aims lto provide 'novel means tion in a machine. Centrifugal weights are employed for imparting straight line reciprocation to a slide, and the invention contemplates such a disposition cf the weights that the tendency of the weights to move the slide transversely of its direction of straight line travel will be minimized.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

Withthe above and other objects in view,which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings:

Fig. 1 shows, in side elevation, a machine constructed in accordance with the invention, parts being in section;

Fig. 2 is a top plan;

Fig. 3 is a transverse section.

The invention contemplates the use of a support S, which may include a base frame I carrying a table 2. Pairs of posts 3 are erected on the table 2, the posts of the pairs being connected by tie bars 4. Theposts have horizontal guide bores 5, which preferably are circular in cross section. The upper ends of the posts 3 are provided with oil cups 6, and oil ducts 1 lead downwardly from the oil cups, to the bores 5, a means thus being provided Vfor lubricating a slide (hereinafter described), which is mounted for reciprocation in` the bores 5. Packings 8 are disposed on opposite sides of the posts 3, and are held in place by retaining plates 9, connected by securing elements I0.

The numeral II designates a slide, including parallel rods I2, preferably of circular cross section, the rods being mounted for reciprocation in the guide bores 5, in the packings 8, and in the retaining plates 9. At one end, the rods I2 of the slide II are connected by a transverse yoke I4, carrying means I5 whereby the slide may be connected to any instrumentality which is to be driven.

Parallel beams IB, which may be channels, are superposed on the rods I2, and are connected thereto by securing elements I'I. Spacers I8 are disposed between Vthe beams I6. Securing members I9, Asuch as bolts, pass through the beams vI6 andthe spacers I8 `and bind the vbeams against the ends of the spacers, therebya-fording a rigid structure. I

To one of the beams I6 is secured a depending bracket 2l). The inner ends of links 2I are pivotally mounted on the bracket 20. The outer ends of the links 2l are connected to pull springs 22, the outer ends of the pull springs being attached to the posts 3.

Anti-friction bearings 23 are secured to the outer sides of the beams I6 of the slide II, and parallel shafts 24 are journaled for rotation in the bearings. The shafts 24 carry intermeshing gear wheels 25 of the same size, the gear wheels being located between the beams I6.

Radius arms 2l are secured to the shafts 24, between the beams I6. Counterweights 28 of equal mass are supplied and are grooved transversely, as shown at 29, to receive the arms 21. Securing elementsv 30 connect the weights 28 detachably to the arms 21.

On the outer ends of the shafts 24, cone pulleys 3I are secured. The cone pulleys 3| cooperate with belts 32, engaging the cone pulleys 33 on the shafts of motors 35, for instance electric motors, supported from the base I, as shown at 36, and located below the slide II.

When rotation is imparted to the shafts 24, by means of the cone pulleys 3|, the belts 32, the cone pulleys 33 and the motors 35, the weights 28 will impart reciprocating movement to the slide II, the rods I2 of the slide reciprocating in the guide bores 5 of the posts 3, and straight line reciprocation being imparted to any member which is to be driven, by way of the yoke I4.

The extent of travel of the slide Il, horizon.

tally, may be altered by substituting for the weights 28, other weights of different mass. The springs 22 and associated parts constitute combined shock-absorbing and return members. The springs 22 and associated parts may be omitted if desired.

It is understood that the motor 35 may be duplicated, but a single motor may be used. Two motors produce a power transmitting machine which operates somewhat more smoothly than is the case when one motor is used.

The arms 2l are so located circumferentially of the shafts 24 thatthe weights 28 move simultaneously toward one end of the slide II, and toward the line of reciprocation of the slide II, and both Weights cooperate in the reciprocation of the slide. It will be noted, referring' to Fig. 1, that when one of the Weights 28 is on one side of the line of reciprocation of the slide l I, the other Weight is on the opposite side of the line of reciprocation. The Weights 28, therefore, tend to neutralize forces tending to move the slide transversely of its line of reciprocation, and the friction of the slide rods l2 in the posts 3 is reduced accordingly.

The device forming the subject matter of this application is simple in operation but Will be found thoroughly effective for the ends in view, namely transforming rotary movement into straight line reciprocation, and transmitting the straight line reciprocation to a part to be driven.

Having thus described the invention, what is claimed is:

1. In a machine for changing rotation into straight line reciprocation, a support, a slide, means for mounting the slides for straight line reciprocation on the support, lparallel shafts journaled on the slide, intermeshing spur gears of the same diameter secured to the shafts, Weights of like mass mounted to move in like orbits with the shafts, the Weights being so disposed, 130 degrees apart, circumferentially of the shafts, that they move simultaneously to- Ward one end of the slide and toward the line of reciprocation of the slide, and then move to positions on opposite sides of the line of reciprocation of the slide, and means for rotating one shaft, thereby to minimize vertical components in the movements of the slide.

2. In a machine for changing rotation into straight line reciprocation, a support having spaced guides, a slide comprising parallel rods, having their opposite end portions mounted to reciprocate in the guides, beams disposed above the rods, to reinforce them against bending, and connections joining the beams; parallel shafts journaled on the beams, intermeshing spur gears of like diameter secured to the shafts, radius arms carried by the shafts, Weights of like mass mounted on the arms at equal distances from the centers of rotation of the respective shafts, and means for rotating one shaft.

GEORGE E. ERTEL. 

